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. 2012 Feb 28;7(2):e32741. doi: 10.1371/journal.pone.0032741

Figure 4. Expression and activity of r-hPAP lacking signal peptide(-SP).

Figure 4

(A) Western blot of crude cell lysates from untransformed X33 cells and transformants expressing hPAP with (r-hPAP) or without (-SP) a signal peptide. Blot probed with anti-hPAP antiserum. Equivalent amounts of total protein were loaded in each lane. (B) DiFMUP fluorometric enzyme assay with the indicated crude cell lysates. Data are plotted as an average of duplicate trials ± SD.